Performance Comes From the Harness
Two companies, the same AI model, opposite results. The difference is not the model but the harness. The 5 layers explained for a CTO or CISO.
Claude for business: Claude Team, Claude Enterprise, pricing and privacy
As of 16 October 2026, Claude Team costs $20 per seat per month billed annually, or $25 billed monthly, excluding applicable taxes, for 2 to 150 people; Claude Enterprise costs $20 per seat per month billed annually, plus consumption at API rates, with a 20-seat minimum. This guide compares the two plans and covers privacy, data residency and GDPR.
Turning Business Expertise into AI Skills
Your experts' know-how can become a reusable module your AI agents call on, one that your company owns instead of depending on a subscription.
Your AI Instruction Files Are Code
A CLAUDE.md or agent config downloaded from the internet is executable code. The real vectors of the AI supply chain and a 6-point checklist.
What Attackers See About You
Through passive reconnaissance, an attacker gathers what your company exposes without touching your systems. What is visible, why AI helps attackers, and 5 checks to run.
Sovereign AI: your documents never leave
Where do your documents go when you use a cloud AI? A lawyer, an accountant or a clinician needs them to stay on their own machines. Here is why and how.
EU AI Act: What Changed on 2 August 2026
The EU AI Act generally applies from 2 August 2026. See what changed in August 2026, what the AI Omnibus postponed, and which actions remain urgent.
Securing AI Agents in the Enterprise
How to secure AI agents that act on your systems: key trade-offs, seven defense layers and common traps for CIOs and CISOs.
Corporate AI training cost: 2026 price ranges
How much does corporate AI training cost? 2026 market ranges, what drives the price, net cost after French OPCO funding, and real budget examples.
OPCO Funding for AI Training
How to fund AI training through an OPCO in 2026: Qualiopi requirement, finding your operator, coverage, four steps and the FIF-PL case.
Claude Certified Architect: the Foundations and Professional levels
Anthropic's Claude Certified Architect certification has two levels, Foundations and Professional. Ulysse Trin, founder of Colombani.ai, has held the Professional level since September 2026. This article covers what each level assesses and how to prepare.
Why Your AI PoC Isn't Production-Ready
Three things separate an AI proof of concept from a reliable production agent: evaluation datasets, guardrails and observability.
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